South African enfant terrible filmmaker and artiste-cineaste Manus Oosthuizen meets with Rotten Tomatoes-approved indie film critic Babette Cruickshank in an Echo Park sound studio. With key members of Manus’s crew joining, they record an audio commentary track for his new elegiac feature documentary “Razzennest.” But the session goes down a different path. The ultimate elevation of arthouse horror, just not as you might expect.